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Stolb23 [73]
3 years ago
5

Can someone help me with this? (WILL GIVE BRAINLIEST)

Chemistry
1 answer:
iragen [17]3 years ago
6 0

the answer is in the picture, btw the molar mass for the first one is wrong, it should be 77.98, and the final product is 2.32

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How many molecules of O2 will be required to produce 28.8 g of water?
Mrac [35]
I think 1.67 x 10^20
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3 years ago
Under a certain set of conditions, the percent yield of a reaction that produces carbon dioxide is 75.0%. What mass in grams of
ExtremeBDS [4]

Answer:

Actual yield = 20.03g

Explanation:

% yield = 100.\frac{actual yield}{theoretical yield}% yield = 100. \frac{actual \ yield}{theoretical \ yield}

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Actual yield = 75.26.7/100

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6 0
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A ______ must be replaced after too much current in it causes it to melt.
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A circuit breaker must be replaced after too much current flowing through it causing it to melt.
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2 years ago
4.80 x 10^25 formula units pf calcium iodide (Cal2) will have what mass?
maw [93]

Answer:

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Explanation:

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∴ mol CaI2 = (4.80 E25 units )×(mol/6.022 E23 units) = 79.708  mol CaI2

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7 0
3 years ago
How much heat is required to raise the temperature of 65.8 grams of water from 31.5ºC to 46.9ºC?
vodomira [7]

Answer: 1,013.32 cal × 4.18 J/cal = 4,235.68 J

Explanation:

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m = 65.8 g

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Tf = 36.9°C

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3 0
3 years ago
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